Home / 825,343.12-1,138,959.07-462,765.86

Finding the Fourth Proportional to 825,343.12, 1,138,959.07 and 462,765.86

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Solution

The fourth proportional to 825,343.12, 1,138,959.07 and 462,765.86 is: 638,608.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    825,343.12 : 1,138,959.07 = 462,765.86 : x
  2. Step 2: Convert to fraction form
    825,343.12/1,138,959.07 = 462,765.86/x
  3. Step 3: Cross multiply
    825,343.12x = 1,138,959.07 × 462,765.86
  4. Step 4: Simplify right side
    825,343.12x = 527,071,373,555.80
  5. Step 5: Solve for x
    x = 527,071,373,555.80/825,343.12
  6. Step 6: Final answer
    x = 638,608.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.